Fundamental Theory

The 8 Cognitive Functions

Each function represents a distinct mental process that your brain uses to perceive the world and make decisions

🔮
Ne

Extraverted Intuition

Possibility Explorer

Explores infinite possibilities and sees unexpected connections

Dominant: ENTP, ENFP
Auxiliary: INTP, INFP
🌌
Ni

Introverted Intuition

Visionary Strategist

Visualizes the future and foresees long-term implications

Dominant: INTJ, INFJ
Auxiliary: ENTJ, ENFJ
🎨
Se

Extraverted Sensing

Sensory Adventurer

Lives in the present moment and seeks intense experiences

Dominant: ESTP, ESFP
Auxiliary: ISTP, ISFP
📚
Si

Introverted Sensing

Memory Guardian

Preserves traditions and values past experience

Dominant: ISTJ, ISFJ
Auxiliary: ESTJ, ESFJ
⚙️
Te

Extraverted Thinking

Logical Organizer

Optimizes systems and implements efficient structures

Dominant: ESTJ, ENTJ
Auxiliary: ISTJ, INTJ
🧠
Ti

Introverted Thinking

Systems Analyst

Analyzes logical principles and seeks internal coherence

Dominant: ISTP, INTP
Auxiliary: ESTP, ENTP
💖
Fe

Extraverted Feeling

Social Harmonizer

Creates social harmony and values community connection

Dominant: ESFJ, ENFJ
Auxiliary: ISFJ, INFJ
🌸
Fi

Introverted Feeling

Values Defender

Maintains personal integrity and defends deep values

Dominant: ISFP, INFP
Auxiliary: ESFP, ENFP

Compare Mirror Functions

Understand the differences between similar functions

🔮
Ne
Possibility Explorer
vs
Ni
Visionary Strategist
🌌

Ne vs Ni

Exploration vs Vision

🎨
Se
Sensory Adventurer
vs
Si
Memory Guardian
📚

Se vs Si

Experience vs Memory

⚙️
Te
Logical Organizer
vs
Ti
Systems Analyst
🧠

Te vs Ti

Efficiency vs Analysis

💖
Fe
Social Harmonizer
vs
Fi
Values Defender
🌸

Fe vs Fi

Harmony vs Integrity

Additional Resources

Apply cognitive functions to specific areas of your life